Venmo is a service to transfer money to people using your phone. It has a social aspect, allowing you to show your frineds payments that you made to other people. The catch is that any payments you make on the site are publicly accessible to anyone who wants to see them. Below is the most recent transaction that was done over Venmo.
Venmo's API of recent transactions is publicly available for anyone to access if you want to see the source for yourself. To see a new transaction, refresh the page.
For more information about Venmo and their public API, I recommend checking out Public By Default, the site that inspired me to make this one. This will also give you instructions to make your transactions private and prevent you from showing up on this site.